Hose coupling



March 17, 1936. J. w. W LSH 2,034,644

HOSE COUPLING Filed Feb. 13. 1934 2 Sheets-Sheet i File .4.

aw (/5505 @M/s March 17, 1936'. J. w. WALSH 2,034,644

HOSE COUPLING Fi led Feb. 13. 1934 2 Sheets-Sheet 2 VIIIIIIIIIIlIlIIIIIl/I 1,.

"Wm.- 7575 W/KZAA I 8- e) /f m/fmgx Patented 17,. 1936 UNITED STATES P'ATENTOFFICE nosn comma Joseph W. Walsh, Lansdowne, Pa., assignor to & Coupling (20., a corporation of Application February 13, 1934, Serial No. 710.9821" Dixon Valve Pennsylvania 1 Claim.

The principal object of the present invention is to provide a joint between a hose and a coupling which shall be mechanically strongand tight, even under considerable pressure from'the inside or from the outside of the hose according as the-hose is used as pressure or suction hose. Another object of the invention is to provide a coupling devoid ofloose or projecting parts and possessed of the characteristics mentioned and which shall be comparatively simple and inexpensive in construction and yet very eflicient in use. Y

Other objects of the invention will appear from invention will be claimed.

Generally stated, the invention consists in a hose coupling element comprising a tubular body Y the following description at the end of which the having spaced, springy jaws attached or an; chored directly to one end of the body and arranged ina circular row and each jaw having a stem forming a part of said jaw, a head on the end of said stem, and at least one arm on said head. The outer surfaces of said heads and of said arms bear a single continuous screw-thread. The invention comprises the improvements to be presently described and finally claimed.

In the following description reference will be made to the accompanying drawings forming.

part hereof and in which:

Figure 1 is a sectional view partly in elevation of a hose coupling embodying features of the invention.

Figure 2 is a transverse line 22 of Figure 1.

section taken on the trating a hose in application to a coupling of Figure 1. Figure 4 is a similar view illustrating a modi- Figure 3 is a longitudinal sectional view illusfication which is adapted for use with a hose reenforced with wire.

Figure 5 is a sectional view illustrating a hose coupling element embodying another. modification of the invention.

Refen'ing to the drawings, I is a tubular body provided at one'end with spaced generally T- shaped jaws of which the stem portions 2 are springy and extend from the end of the body I and of which the head portions 3 and arm portio'ns l are arranged in a circular 'row and are portions 2. 6 is an internally tapered and threaded nut. I is a sleeve that extends outward from the body I and terminates generally beyond the end of the jaws. The heads 3-are thicker than the stems 2, so that the jaws arespringy, and the 5 stems 2 are attached or anchored directly to the end of the tubular body I, so that there are no loose parts.

In use, the hose a is applied over the sleeve I and the tapered nut 6 is screwed onto the tapered o thread of the jaws with the result that'the stems or shanks 2 are sprung inward and segments of the onto the surface of the hose 0. exerting upon it 15 a a powerful and permanent grip. The sleeve 1 opposes collapse of the wall of the hose. The

operation may be referred to by saying that the segments of the cylindrical surface are drawn together thus reducing or tending to reduce the diameter of the cylinder so that the clamping action can be likened to that of a split or segmental ring of which the parts are drawn to- .gether which, as is well known, makes anextreniely'strong and tight joint. It may be stated that the construction is exceedingly compact and that while its operation may be likened to that of a contracting ring it is devoid of objectionable projecting parts. l v It willjbe understood that two coupling 'eleo ments are usually employed, and the thread on the body I is an example of means for connecting them.-

The construction and mode of operation of the modification shown in Figure 4 are as above de- 35 scribed except that the sleeve 1 is omitted and the end of the body I is provided with an annular groove or recess 8 into which the reinforced hose 1) is inserted and supported by a lip la. In this case the reinforcement of the hose sufli- 0 ciently opposes collapse of its wall and the action k of the coupling'when tightened up tends to crowd the end of the hose into the recess 8, thusproviding tightness in the joint.

Since the stem portions 2 are spring! they 5 permit of the described operation of the jaws, and since they are integral with both the'body and the head portions 3, they are strong to resist breakage of the coupling element.

The construction and mode of operation. of the modification shown in Figure 5 are as above described, except.that the heads 30. and arms 40 of the jaws are of half T-shape, and the stems 2a are made springy by reducing their thickness in respect to the heads 3a from the outside as indicated at 9. In this figure the coupling element happens to be shown as adapted for use with I hose such as indicated at a in Figure'3.

- which is not limited in respect to such matters or otherwise than as the prior art and the appended claim may require.

I claim: u

A hose coupling element comprising: a tubu-- v lar body adapted to receive the end oi! a hose;

spaced jaws provided at one end of said body and arranged in a circle; springy, elongated stems forming part of said jaws and extending from t end of said body; a head on the end of each 0 said stems; arms carried by each of said 5 body and spaced from d stems; the outer surfaces of said heads an pered and-being covered by a single, continuous heads and projecting gems said end 01' the screw-thread and lying outside of theplaneot 10 the outer surfaces of the stems; and the inner surfaces of said heads and of said arms being in the.form of segments of a cylinder.

JOSEPH W. WALSH.

if said arms being ta- 

